grepcidr can be used to filter a list of IP addresses against
one or more Classless Inter-Domain Routing (CIDR) specifications,
or arbitrary networks specified by an address range. As with
grep, there are options to invert matching and load patterns
from a file. grepcidr is capable of comparing thousands or
even millions of IPs to networks with little memory usage and
in reasonable computation time.
grepcidr has endless uses in network software, including: mail
filtering and processing, network security, log analysis, and
many custom applications.
PR: ports/80315
Submitted by: Douglas Fraser <doug+ports@idmf.net>
